@MattCullum If you can run Deco mesh in Access Point mode, you can wire M5 any way you want to, including connecting them all to ISP Router. In Deco Router mode, which is default mode, you can not...

@MattCullum There is no universal solution, so you'll need to do a bit of assessment what will work for you. 1. Check your Satellite M5 Decos - do they connect to the correct (nearest) to them Deco?...

@MariaZika If you have ISP Router to which Main Deco must be connected, and haven't changed ISP Router configuration, you could try running Deco in Access Point mode. There are no settings to...

@WadeWilson Sounds like a problem with the switch or Ethernet cable between switch and Main Deco. 1. Try connecting Ethernet cable from Main Deco to different switch port. Also, try different...

@Jeff007 There is no real interference on your WiFi network: look at chart, the only "interference" you see is signal from your Deco nodes. This is incorrect report in Deco app and should be ignored....

@rfrimark Both are valid recommendations. I prefer to start with simpler solutions. To "form a new network" and keep PCs connected by LAN you may need to do some rewiring in your house, perhaps buy a...